If you liked the Needless anime, the Anime-Planet community thinks you'd like:
Akuto Sai enters the Constant Academy for Magick Arts hoping to become a high priest and change the world for the better. But when the school's oracle declares his future profession to be 'Demon Lord', he finds himself feared and hated by the entire student population. Now, instead of making comrades and studying for his exam, Akuto finds himself fighting off monsters, bullies, and well-meaning classmates in various states of undress. If navigating a magical high school as a transfer student wasn't difficult enough, Akuto now has to deal with a cute android ordered to observe him 24-hours a day, the precocious attention of the flying, invisible and naked Keena Soga and the advances of the school's most popular girl. Will he be able to overcome his fate, pass his classes, and mend his friendship with the violent Junko Hattori, or will he succumb to his demonic destiny?
Each of these series has a lead male that has tremendous powers and is surrounded by a bunch of women for fan service. If you enjoyed one series, you would likely enjoy the other.
Like shounen's with plenty of ecchi, Gar, and ridiculous powers? Both of these are right up your alley.
Although Needless features almost no magic and is mostly all shounen, and Daimaou is more harem and heavily dependant on magic/fantasy; both series are fast paced, high octane action titles with less emphasis on story and more emphasis on eye-candy. They are both drawn in a similar color palette and style as well.
In any event, if you enjoyed one, you'll certainly enjoy the other.
These series both are extremely over the top action series with a rather mysterious main character. If you like ridiculous series then these are a good fight.
they both have the same type of feel for the show and are awesome in their own way. Although Needless has to do with mutants with lots of fan service and Star Driver has to do with mecha and fanservice they both have awesome battles. Also they both have pretty good OST
“Vash, the Stampede” - worth 60 billion dollars to the one who can turn him in. Bounty hunters everywhere are on the lookout for this legendary gunman, not to mention insurance agents Meryl Stryfe and Milly Thompson, who are tasked with preventing any potential damage that this Vash can cause. But with 60 billion on his head, Vash is not an easy man to find.
The main character and villian in each series are very close to one another. The main character in each has to go through a similar set of hurddles. And each series has a lot of fighting and action in them.
Badass main characters, mysterious powers and relationships/pasts, and lots of humor. This is the closest anime I found to Trigun, which is awesome!!!!!!!!
In the future, basketball is played by giant robots called Bigfoots and the wealthy elite live on the moon. Dan JD is a cocky young boy who lives on the planet Earthdash and makes a meager living working as a delivery service. He dreams of someday bringing his disabled sister to the moon to give her the medical treatment she needs. Dan also despises the boring playing style used by official Bigfoot Basketball, so the first chance he gets he crashes a game to show the world how it's really done - destroying the arena and being thrown in jail in the process! However, by the time he's released, Dan's story is legendary, spawning countless imitators who smash up the city in their Bigfoot duels. All Dan's got to do is fend off his rivals, try desperately to keep his business afloat, and aim for the moon!
While Basquash is (for the most part at least) focused on sport, and Needless is a simple story only about fighting (yup 26 eps of fighting, fighting and more fighting ) they both have very much in common. First of all the overall mood created by sharp drawing style with rich colors, combined with strong music is similar in both of those animes. Than there is the issue of unresonable characters taking flashy actions for the sake of legend/freedom/revenge/friendship or just for the sake of taking them. Finally there is all the ultimate attack shouting, some sort of colored aura added to the attacks and getting through hard situations by the willpower alone. You know - the usual shounen nonsense, that's so tasty to watch. If you like one, you should enjoy the other.
In the future, a man roams through the desolate wastelands. His enemies whisper his name with fear and awe: the "Demon of the Sands". Using his skills and ingenuity, as well as having a mind for tricks, he has a perfect record as a bounty hunter. Yet, he is still a man, and may have finally met his match in the beautiful and very well endowed Asagiri Junko. Now, he must learn to deal with the the harsh climate, hapless outlaws, and his complete weakness for the opposite sex!
Both these animes are set in post-apocolyptic worlds and both contain ecchi. Overall if you enjoyed one you will enjoy the other. (Disclaimer: I cannot be held accountable if the previous statement turns out to be false. =P)